ASTM-C1733 › Historical Revision Information
Standard Test Method for Distribution Coefficients of Inorganic Species by the Batch Method
The following bibliographic material is provided to assist you with your purchasing decision:
Scope
1.1 This test method covers the determination of distribution coefficients of chemical species to quantify uptake onto solid materials by a batch sorption technique. It is a laboratory method primarily intended to assess sorption of dissolved ionic species subject to migration through pores and interstices of site specific geomedia. It may also be applied to other materials such as manufactured adsorption media and construction materials. Application of the results to long-term field behavior is not addressed in this method. Distribution coefficients for radionuclides in selected geomedia are commonly determined for the purpose of assessing potential migratory behavior of contaminants in the subsurface of contaminated sites and waste disposal facilities. This test method is also applicable to studies for parametric studies of the variables and mechanisms which contribute to the measured distribution coefficient.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Significance and Use
The distribution coefficient, Kd, is an experimentally determined ratio quantifying the distribution of a chemical species between a given fluid and geomedium sample under certain conditions, including the attainment of constant aqueous concentrations of the species of interest. The Kd concept is used in mass transport modeling, for example, to assess the degree to which the movement of a species will be delayed by interactions with the geomedium as the solution migrates through the geosphere under a given set of underground geochemical conditions (pH, temperature, ionic strength, etc.). The retardation factor (Rf) is the ratio of the velocity of the groundwater divided by the velocity of the contaminant, which can be expressed as:
Keywords
adsorption; attenuation; batch sorption; distribution coefficient; geochemical; ground water; ion exchange capacity; isotherm; liquid migration; short-term batch; ICS Number Code 13.080.99 (Other standards related to soil quality); 71.040.40 (Chemical analysis)
To find similar documents by ASTM Volume:
To find similar documents by classification:
71.040.40 (Chemical analysis Including analysis of gases and surface chemical analysis)
This document comes with our free Notification Service, good for the life of the document.
This document is available in either Paper or PDF format.
Document Number
ASTM-C1733-10
Revision Level
2010 EDITION
Status
Superseded
Modification Type
New
Publication Date
Oct. 1, 2010
Document Type
Test Method
Page Count
8 pages
Committee Number
C26.13